Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sources.redhat.com/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sources.redhat.com/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com
Subject: Re: nice really nice?
From: Robert Collins <rbcollins AT cygwin DOT com>
To: Randall R Schulz <rrschulz AT cris DOT com>
Cc: thomas <cygwin AT cygwin DOT com>
In-Reply-To: <5.1.0.14.2.20021125185701.02a73ea8@pop3.cris.com>
References: <5 DOT 1 DOT 0 DOT 14 DOT 2 DOT 20021125185701 DOT 02a73ea8 AT pop3 DOT cris DOT com>
Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature";
	boundary="=-1o7lDAo7r+Pf1Pg5VRNS"
Date: 26 Nov 2002 13:06:33 +1100
Message-Id: <1038276393.23528.366.camel@lifelesswks>
Mime-Version: 1.0

--=-1o7lDAo7r+Pf1Pg5VRNS
Content-Type: text/plain
Content-Transfer-Encoding: quoted-printable

On Tue, 2002-11-26 at 14:00, Randall R Schulz wrote:
> Thomas,
>=20
> One thing to keep in mind is that while Unix (and work-alikes) has a -20=20
> (best scheduling priority) ... +20 (worst priority) range, Windows has on=
ly=20
> the six distinct levels. I don't know how Cygwin maps the Unix nice value=
s=20
> to the Windows priorities, offhand. Probably it's a linear mapping.
>=20
> I haven't had a chance to read the information about scheduling in Window=
s,=20
> but I will. Thanks for referring me to it.

Windows has (offhand) ~ 30 scheduling levels. It has priority classes,
which 'group' processes, and then relative priorities within each
class.IIRC you can check sched,cc via CVS to see the actual mapping I
used, it's not linear as such, but nearly so.

Thomas,
 those tests show nothing other than the time it takes to push the iso
through to a bitbucket. Unless there is serious other load on the CPU,
the time *should* be constant.
Rob
--=20
---
GPG key available at: http://users.bigpond.net.au/robertc/keys.txt.
---

--=-1o7lDAo7r+Pf1Pg5VRNS
Content-Type: application/pgp-signature; name=signature.asc
Content-Description: This is a digitally signed message part

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.0.7 (GNU/Linux)

iD8DBQA94tcpI5+kQ8LJcoIRArhOAJ9qQZzK/3dbbpbYpoNQeOtXw1QvIQCdHTwa
eC6xAOVPiB4BiABBL0Vd010=
=yddo
-----END PGP SIGNATURE-----

--=-1o7lDAo7r+Pf1Pg5VRNS--